Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film

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	Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film; Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film
	X. Peng; J. Yan; C. Xu; F. Wang
	2008 ; 2008
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science ; Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623 ; 1073-5623
卷号	39A 期号:1 页码:119-129
摘要	Chromized coatings developed on a mild carbon steel (A3) using a conventional halide-activated pack cementation method at 1120 degrees C inevitably formed chromium carbides in the surface zone, which is the crucial factor giving the coatings a fast scaling rate in 5 pct O(2) + N(2) at 900 degrees C, and simultaneously a severe scale spallation during cooling. No chromium carbides were seen in the chromized coatings, when the steel was pretreated with a similar to 80-mu m-thick precursor film of electrodeposited Ni Without or with dispersions of similar to 5.5 wt pct CeO(2) nanoparticles. However, during oxidation of the chromized, Ni-film-treated coating in 5 pet O(2) + N(2), fresh chromium carbides were intensively precipitated in the Coating near-surface zone. The carbides' oxidation caused the formation of the scale, with an increased susceptibility to cracking and spalling. For the chromized, Ni-CeO(2)-nanocomposite-treated A3, chromium carbides were sporadically precipitated throughout the entire coating during oxidation, and the negative effect of the carbides on oxidation was prevented. This, together with the reactive element effect (REE) of the added CeO(2) during oxidation, is proposed for this coating, for the purpose of thermally forming a chromia scale with a noticeably reduced growth rate and also an enhanced adhesion.; Chromized coatings developed on a mild carbon steel (A3) using a conventional halide-activated pack cementation method at 1120 degrees C inevitably formed chromium carbides in the surface zone, which is the crucial factor giving the coatings a fast scaling rate in 5 pct O(2) + N(2) at 900 degrees C, and simultaneously a severe scale spallation during cooling. No chromium carbides were seen in the chromized coatings, when the steel was pretreated with a similar to 80-mu m-thick precursor film of electrodeposited Ni Without or with dispersions of similar to 5.5 wt pct CeO(2) nanoparticles. However, during oxidation of the chromized, Ni-film-treated coating in 5 pet O(2) + N(2), fresh chromium carbides were intensively precipitated in the Coating near-surface zone. The carbides' oxidation caused the formation of the scale, with an increased susceptibility to cracking and spalling. For the chromized, Ni-CeO(2)-nanocomposite-treated A3, chromium carbides were sporadically precipitated throughout the entire coating during oxidation, and the negative effect of the carbides on oxidation was prevented. This, together with the reactive element effect (REE) of the added CeO(2) during oxidation, is proposed for this coating, for the purpose of thermally forming a chromia scale with a noticeably reduced growth rate and also an enhanced adhesion.
部门归属	[peng, x.; yan, j.; xu, c.; wang, f.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;peng, x (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;xpeng@imr.ac.en ; [peng, x.; yan, j.; xu, c.; wang, f.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;peng, x (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;xpeng@imr.ac.en
关键词	Nickel Nickel Alloys Alloys Diffusion Diffusion Behavior Behavior Growth Growth Microstructures Microstructures Delamination Delamination Resistance Resistance Platinum Platinum
URL	查看原文 ; 查看原文
WOS记录号	WOS:000252114500012 ; WOS:000252114500012
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33047
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Peng,J. Yan,C. Xu,et al. Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film, Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science, Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2008, 2008,39A, 39A(1):119-129, 119-129.
APA	X. Peng,J. Yan,C. Xu,&F. Wang.(2008).Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,39A(1),119-129.
MLA	X. Peng,et al."Oxidation at 900 degrees C of the chromized coatings on A3 carbon steel with the electrodeposition pretreatment of Ni or Ni-CeO(2) film".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 39A.1(2008):119-129.